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    User name Moffit

    Log entry time 08:02:26 on September 17, 2005

    Entry number 154969

    keyword=Owl Shift Summary

    Owl Shift for Saturday September 17th, 2005

    Leader:   Bryan Moffit
    Worker:   Ryan Snyder

    Left HRS p0   = -2.737 GeV/c   Septum Set Current = 283.57A
    Right HRS p0  = -2.733 GeV/c   Septum Set Current = 278.22A
    Sweeper is ON at 111.00A

    Summary

    Great production this shift... (runs 5105-5115: 371.5k pairs x 40µA =~ 0.99 Coulombs).

    Significant Events

    • 00:00 Began shift in the middle of run 5105, compton run 12193.
    • 00:12 Asked MCC to increase our beam current to 40µA.
    • 01:27 Start a few quick source scans. RHWP to 4100. (compton stopped)
    • 02:02 Asked MCC to insert the IHWP, resumed production with feedback turned on. Compton restarted.
    • 03:02 Noticed that the gas panel alarm for the cryo-target was "silenced". Flipped the switch.
    • 05:49 Asked MCC to remove the IHWP.
    • 06:57 Incoming Call: R. Suleiman, Status Update.

      • Data Run Summary

      • 00:00 Run 5105 - Production Run (20cm Helium-4), IHWP OUT, 46.6k pairs.
      • 00:27 Run 5106 - Production Run (20cm Helium-4), IHWP OUT, 48.1k pairs.
      • 01:27 Run 5107 - Parityscan (20cm Helium-4), IHWP OUT. RHWP 4100. Pitascan. IA feedback off, CIA feedback on.
      • 01:43 Run 5108 - Parityscan (20cm Helium-4), IHWP OUT. IA Scan. All feedback off.
      • 01:49 Run 5109 - Parityscan (20cm Helium-4), IHWP OUT. CIA Scan. All feedback off.
      • 02:02 Run 5110 - Production Run (20cm Helium-4), IHWP IN, 44.2k pairs.
      • 02:58 Run 5111 - Production Run (20cm Helium-4), IHWP IN, 46.4k pairs.
      • 03:54 Run 5112 - Production Run (20cm Helium-4), IHWP IN, 49.1k pairs.
      • 04:51 Run 5113 - Production Run (20cm Helium-4), IHWP IN, 41.1k pairs.
      • 05:49 Run 5114 - Production Run (20cm Helium-4), IHWP OUT, 49.0k pairs.
      • 06:45 Run 5115 - Production Run (20cm Helium-4), IHWP OUT, 47.1k pairs.
      • 07:41 Run 5116 - Profile Scan (20cm Helium-4), IHWP OUT.
      • 07:53 Run 5117 - Production Run (20cm Helium-4), IHWP OUT. Passed to day shift.

      Compton Data Run Summary

      • 00:00 Run 12193 - IHWP OUT. Analysis appears to have failed.
      • 01:53 Run 12194 - IHWP IN, Beam polarization = -82.9%,
      • 03:58 Run 12195 - IHWP IN, Beam polarization = -83.7%,
      • 05:54 Run 12196 - IHWP OUT, Beam polarization = ??.?%, ROC1 crashed towards end of run.
      • 07:24 Run 12197 - IHWP OUT. Passed to day shift.

      Objects above are not to scale.